From: dblack@...
Date: 2007-01-07T01:50:02+09:00
Subject: Re: Getting existing context when defining a singleton method (class << obj)

Hi --

On Sun, 7 Jan 2007, Roland Swingler wrote:

> Great!
>
>> Yes:
>
> Thanks for the (very speedy) response.
>
>> Hopefully there will be a method in Ruby 1.9/2.0 that will let you
>> grab an object's singleton class, so you could do:
>>
>>    obj.singleton_class.class_eval   # etc.
>
> I guess you can have this in ruby 1.8 by doing
>
> class Object
>  def singleton_class
>    class << self
>      self
>    end
>  end
> end

Yes, many of us have had occasion to write exactly that :-)

> Some code that I've seen around is now much clearer... thanks again.

Glad to help!


David

-- 
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